Improvement in smoke-consuming furnaces



`D.-ARGERBHIGHT a w.`ALLx-:NswonTH.

Smoke-Consuming Furnace..

`Peltentedlafnl 26,1875.

No'. 59,14l.

` rangement of furnace for accomplishing such nace into three distinct compartments or trechambers by means of two vertical walls orl u tral one of said chambers being arranged for adapted for the consumption of coal. These that all the smoke, gases, Snc., generated in `chamber". One or more pipes' are embedded drurn'isa pipe, through which air is forced by A the compressed air, after traversing said drum UNITED STATES PATENT OEEIcE.-

DANIEL AEGERERIGET AND WILLIAM ALLENswonTH, 0E Thon-c1310.

iMPRovEMENT IN sMoKE-coNsuMiNe FuRNA-s.

Specification forming part of Letters Patent No. 159, [41', dated January 26, 1875A; application-tiled. January 2, 1875.

To all whom it 'may concern:

Be it known that we, DANIEL ARGER- BRIGHT and WILLIAM ALLENsWoETH, both of Troy, Miami county, Ohio, have jointly in-A vented a new and useful Smoke-Consuming` Apparatus, of which the following is a specification:

'lhis invention relates to that class of apparatus in which the dense smoke and combustible gases emanating from freshly-applied coal are consumed by compelling them to traverse a bed of incandescent coke before said gases escape into the flue or chimney; and our improvement consists in a novel ara result. For this purpose we divide the furpartitions located inside the furnace, the cenbnrning coke, while the two outer ones are two internal partitions havesuitable openin gs in them near the front of the furnace, in order the outer or coal chambers may be drawn into the central or coke chamber, and be compelled to traverse the incandescent fuel in the same, escaping into'the exit-flue, which latter is located at the rear end of the aforesaid central in the outer and inner walls of the furnace, which pipes are carried rearwardly and connected toa drum or cylinder, the latter being located transversely of the flue and in rear of the bridge-wall. -Communicating with this means of any suitable blowing apparatus,and

and the pipes-embedded in the walls of the furnace, escapes, through suitable .nozzles or tuyeres,'nto the various re-chambers.' These discharging-nozzles areattached to the aforesaid embedded pipes, and project into the furnace a little above the grate-bars, thus directing thejets of heated air into the fuel in such a manner as to cause the most perfect combustion.

Having thus indicated the leading features of our invention, we will now proceed to give a detailed description of the same. i

In the accompanying drawing, Figure l is a horizontal section through a smoke-consuming apparatus embodying our improvement, the rear end'of the ue not being shown. Fig. 2 isa vertical section through lthe same at the line X X, and Fig. 3 is a vertical section at the line Y Y. v

A A B represent the external walls ot' the furnace of a steam-boiler, which furnace'may be of any suitable size and shape. Located Within this furnace, and'eXtending from the Hoor orbase C up to the boiler D, are two vertical walls' or' partitions, E E', whichl divide said furnace into three distinct fire-chambers,

.F G G', of which the central one, F, is arranged.

for burning eolie, while the two outer ones, G G', are adapted for the consumption of cqal.

to the coke-chamber F', saidl door being prol vided with a register, l. l isa register to the ash-pit of this central chamber of the furnace. h is an openingin the bridge-wall H, through which openin g the flames escape from central chamber, F, into flue M, which latter may communicate' directly with the .smoke-stack, o'r else with one or more return-hues in the boiler D. Arranged athwart the Hue M, and somewhat in rear of bridge-wallH, is al drum or cylinder, N, having apipe, O, attached toit,

' which pipe communicates with a blowingl apparatus of any approved construction.- Projectin g from this drum are two distinct sets of horizontal pipes, R R and S S,-of whichl the former are embedded in the outer walls, A A', of the furnace, while the latter are inclosed wit-hin the partitions E E',.as clearly shown in Fig. 1. These pipes are respectively provided with nozzles or tuyeres1` r s s', which Y;A are arranged in horizontal rows parallel with and slightly above the grate-bars of the fnrnace. The nozzles r s project into one ot' the outer chambers, G, while the nozzles fr' s' project into the other outer chamber, G'. 'l T' are additional nozzles attached to thc inner pipes, S S', for the purpose ot injecting heated air into the central chamber, F.

It' preferred, the 'front doors, J, may be omittcd from the outer chambers, Gr G', and they maybe supplied with fuel through doors in the sides ot' the same and near the rear or" the furnace, as indicated by dotted lilies at a a' in Fig. l.

the operation of our apparatus is as follows: Both of the chambers G G are first charged with coal, which is then lighted and allowed to burn until it becomes thoroughly cokcd. As soon as this is accomplished the coke is raked through the openings c c' and distributed over the grate f of central chamber, F, after which fresh coal is again applied to the chambers Gr G'and the blowing apparatus set in motion.

'ihere beingv no exit from the chambers G G', either through the external walls, A A', or thc bridge-wall H, it is evident that the products of combustioncan escape from said chambers only by drawing forward and passing thrtugh the openings c c' in two separate currents, as indicated by curved arrows in Figxl. These currents mingle together near the front of the centra-1 chamber, F, and the'drat't of the chimney, aided by the jet-blasts, draws them back, so as to escape through the openings l1. ot' the bridge-wall into the flue M, and in so doing the smoke and all combustible gases are compelled to traverse the mass of highly incandescent fuel in said chamber, thereby consuming these products of combustion-and pro ducing a white flame under the boiler.

As this intense tlame surrounds the drum N, it will be readily understood that the airi'which is forced through this part ot' the apparatus becomes highly heated, and the temperature is raised still higher by the air being compelled to traverse the pipes B, 1t S S', which are embedded in the Valmost red-hot walls ofthe furnace.

As a result ot' this arrangement the air issues from the nozzles fr 1", s s', and 'l T' at a very high temperature, thereby promoting combustion and economizing fuel, which advantages cannot be obtained where cold air is admitted to the tire-chambers of the furnaces. These numerousjets of highly-heated air conduct the carbonio-oxide gas away from thc chamber G G', and as fresh oxygen is mingled with this gas on its passage through the central chamber, F, the dense black smoke that usually cscapcs from the chimney is entirely consumed.

The registers j J' K l l' may bc adjusted so as to admit sufticient fresh air to produce the most thorough combustion without, at the same time, having a tendency to lower the temperature of the fire-chambers to any .undue extent.

In the drawings a single pipe is shown cmbeddedv in each of the four walls surrounding the three tire-chambers; but it is evident that two or more pipes. may be built within each oi' said walls, it' desired.

Our improvement can be applied to a battery ot boilers equally as well as toa single one, or it may be arranged to operate with any kind o t furnace that consumes coal.

In applying our improvements to furnaces now in use the pipes it 1t' and S S' may be attached to thc outer sides ot the appropriate walls; but we prefer to embed them as shown, so as not to encroach on the tire-space.

In some cases the drum N may be omitted, and the blast-pipes R lt' S S' may be attached to a tube leading from the blowing apparatus.

For the purpose of firing up, a coke-tire may, if preferred, be lrst started in thc central chamber, instead ot' waitin g for that produced by the combustion in the side chambers.

XVe claim as our inventionl. A smoke-consuming. apparatus, consisting, essentially, ot' a turn acc conmosed ot' three distinct chambers, F G G', 'whose divisionwalls E E' are provided with openings e c', and whose bridge has a single exit, 7L, when employed in conjunction with the embedded pipes R R' S S and nozzles 1' i" s s' T T', for introducing a'blast ot heated air into said chambers, substantially as herein described, and for the purpose set forth. A p

2. In combination with the blast-pipes R R' S S', applied to a furnace, as described, the exposed drum or cylinder N, arranged athwart the tlue M, in rear ot' bridge-wall H, for the purpose set forth, and herein described.

In testimony ot which invention we hereunto set our hands.

DANIEL ARGERBRIGUT. \'VILL1AM ALLEN S W OR'LH.

Attest:

GEORGE GREEN, Guo. H. KNIGHT. 

